docs: def add_supporting_data(self, evidence_line, measurement_dict):
          """
          Add supporting data
          :param evidence_line:
          :param data_object: dict, where keys are curies or iris
          and values are measurement values for example:
              {
                "_:1234" : "1.53E07"
                "_:4567": "20.25"
              }
          Note: assumes measurements are RDF:Type 'ed elsewhere
          :return: None
          """
          for measurement in measurement_dict:
              self.graph.addTriple(
                  evidence_line, self.globaltt['has_evidence_item'], measurement)
  
              self.graph.addTriple(
                  measurement, self.globaltt['has_value'],  # 'has measurement value' ??
                  measurement_dict[measurement], True)
          return